Need recommendations for inexpensive power cord


I’ve never used after market power cords and am considering buying a couple.  I have some questions:

Considering the astronomical price power cords go for, is there any point getting one or two in a lower price range?
At what price point do power cords start to make a difference in your system?
I have two monoblock NuForce class D 160 watt amps.  Is this where they should go? 
Can someone recommend an inexpensive power cord that can make a difference?

 
128x128rvpiano
I would is also checkout Audio Sensibility cables. They use OCC copper and sound very good for the money.  I tried several cables like Signalcable and Pangea but I think these are much better.  I suspect the difference is the OCC cooper used. I’ve had good experience with art audio cables as well. 
I’ve decided to go another route which will solve more than one problem.
I got a very good buy on a $1400 power conditioner which has four sockets, including two dedicated to my monoblocks:
Isotek Orion Power line Conditioner with Isotek Elite 5 foot Power cord.
Hopefully this will do the job.

Again, Thank you for all your suggestions!
I would recommend building your own power cords using the Furutech.
Typically its best not to use power conditioners for amps.

Mat
www.jjaudiosolutions.com
I second the suggestion about power cords from Signal Cable. I've had 3 or 4 in the past couple years. They're very solid construction, sound good (as much as any competently designed & constructed power cables do), and are inexpensive.

I also use Signal Cable's interconnects throughout my desktop system. Once again, very well built, good sound, and very inexpensive compared to some of the big-$$ products out there.

The owner's name is Frank. He's extremely helpful.

www.signalcable.com

Frank's email is sales@signalcable.com
The Isotek power conditioner and power cord have made a strong improvement to my system: lower noise floor, better bass, better imaging and sound staging.
Well worth the $400 price I bought it for used.